"You know Rachel?"
"Oh yeah. Isn't she the nicest person out there or something?"
"I know right. That's what I thought at first but I saw her beat some chick at the grocery store just cause she looked at her man."
"What a closet bitch."

A person who appears to be a nice person, but in reality is a bitch. This person tends to talk about people behind their backs and screw people over whenever they have the opportunity. However, to the untrained eye, this person seems like an angel.

Marc - "Wow man, I thought your Jenny and I were really hitting it of at the party last night, she even gave me her number and told me we should hang out. But today I find out that she was telling everybody I was annoying her and being creepy and shit."